SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Provide nourishment for the developing sperm
organs used in spermatogenesis
6-8 weeks
sertoli cells
ewe's estrous cycle
2. 265-285 days
effects of BST
uterus
cow ovulation
Dairy Cattle Gestation
3. Why Dairy calves are fed powdered milk.
sow ovulation
cryptorchid
1. more cost effective - 2. powdered milk is in excess production
uterus
4. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
mastitis
prostate gland
monorchid
5. When are steers and heifers weaned from bottle feeding?
6-8 weeks
hormones
mare gestation
oviducts
6. Prevent the cow from getting an infection from the calve
effects of estrogen
Dairy calves are removed from cow at birth to...
leydid or interstitial cells
cowper's gland
7. Produce testosterone. located between the seminiferous tubules
leydid or interstitial cells
accessory sex glands
accessory sex glands
Mares
8. Microscopic - make sure not sterile - very few bulls are actually tested
penis proper
semen evaluation (BSE)
testosterone
butterfat
9. (LH) causes female's egg to break (her period)
mare ovulation
Lutinizing Hormone in females
monestrous
reasons for castration
10. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
semen evaluation (BSE)
ewe ovulation
Avg. bull specs
femininity of a heifer
11. Milk ~305 days - dry 60 days prior to calving
Dairy Cattle milking schedule
Where livelihood is in agriculture
ewe estrus
Grading choice
12. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Lutinizing Hormone in females
Follical Stimulating in males
dartos muscle
cow estrus cycle
13. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
Dairy calves are removed from cow at birth to...
sperm cell
dairy cattle pregnancy check
reasons for castration
14. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
what has to happen for males for copulation to occur
urethra
6-8 weeks
epididymis: definition - 3 parts - 4 functions
15. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
Brown Swiss Cow
sperm cell
Mares
16. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
Dairy Cattle Gestation
effects of estrogen
burdizzo
elastrator
17. When are dairy cattle dehorned?
leydid or interstitial cells
Grading choice
sperm cell
~1 month
18. Not under a timeline - cow can not be sold as steak
Follical Stimulating in males
Grading choice
testis (gonads)
Hard
19. Front feet and head first. (except for hogs and dogs)
hormones
feeding a high producing dairy cow
sigmoid flexure
normal presentation of the fetus
20. Why Dairy calves are fed powdered milk.
elastrator
mare ovulation
1. more cost effective - 2. powdered milk is in excess production
effects of estrogen
21. Duct through penis that carries sperm and urine
cow gestation
urethra
dry matter and water
ewe's estrous cycle
22. 1-2 days
cow ovulation
polyestrous
cowper's gland
ewe estrus
23. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
accessory sex glands
sow estrus
Size of cow in relation to the amount of milk produced
ewe gestation
24. What helps regulate spermatogenesis?
testosterone
spermatogenesis
penis and prepuce observation (BSE)
estrus
25. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
sperm cell
scrotal circumference (BSE)
Dairy Cattle Gestation
vagina
26. When are dairy cattle dehorned?
femininity of a heifer
~1 month
humans: stress level vs sperm
Blood
27. What makes the milk flow through the mammary glands?
cow estrus cycle
ewe gestation
Blood
cervix
28. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis proper
cervix
penis sizes vs delivering methods
castration
29. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
dairy cattle pregnancy check
cow gestation
mare ovulation
eminal vesicles
30. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
burdizzo
purpose of Breeding Soundness Exam (BSE) for males
Size of cow in relation to the amount of milk produced
sperm cell
31. Sperm is produced here
organs used in spermatogenesis
seminiferous tubules
estrus
dartos muscle
32. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
Grading choice
sperm cell
organs used in spermatogenesis
mare's estrous cycle
33. Animals which have many estrous periods per year (ex: cow - sow)
vagina
polyestrous
testosterone
sow estrus cycle
34. Can survive ~7 days in cow. vast majority <48 hours
dairy cattle pregnancy check
Sperm survival specs
mastitis
rectal palpation (BSE)
35. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
mare's estrous cycle
mare's estrous cycle
4 major reasons for culling dairy cows
Reasons for gestation length being affected
36. (male) pushes the testes outward toward the legs for a cool-down off of the body
libido test (BSE)
cremaster muscle
ewe estrus cycle
sow estrus cycle
37. Luteolysis happens because of the ____________ hormone
effects of estrogen
pelvis
prostaglandin
Avg. bull specs
38. Superior genes are _______ to multiply
colostrum
Parturition
Dairy Cattle Lactation (standard)
Hard
39. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
retractor muscles
cow ovulation
effects of estrogen
Holstein Cow
40. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
leydid or interstitial cells
van deferens
epididymis: definition - 3 parts - 4 functions
mare's estrous cycle
41. Why does estrus happen before ovulation?
oviducts
epididymis: definition - 3 parts - 4 functions
cow estrus cycle
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
42. To remove/separate testicles from animal's body before animal reaches puberty
effects of estrogen
elastrator
castration
~1 month
43. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
eminal vesicles
visual evaluation (BSE)
cow estrus cycle
sow estrus
44. 30 hours after estrus begins
functions of progestrone
epididymis: definition - 3 parts - 4 functions
cow ovulation
effects of BST
45. ~60 days before calving
sow ovulation
testosterone
dry-off time in dairy cattle
spermatogenesis
46. Way to know everything is alright with the breeding male
scrotal circumference (BSE)
purpose of Breeding Soundness Exam (BSE) for males
vulva
Grading choice
47. Why does estrus happen before ovulation?
Dairy Cattle milking schedule
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
growth lost from castration methods (knife & band)
ewe estrus
48. (FSH) causes egg to mature in females
Lutinizing Hormone in females
cow gestation
Follical Stimulating in females
Dairy Cattle milking schedule
49. 30-38 hours after estrus cycle begins
uterus
burdizzo
sow ovulation
rectal palpation (BSE)
50. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Follical Stimulating in males
cryptorchid
hypothalamus and pituitary gland